import wx
app=wx.App()
dc=wx.ScreenDC()
dc.SetBrush(wx.TRANSPARENT_BRUSH)
dc.SetPen(wx.Pen((255, 0, 0), width=3, style=wx.PENSTYLE_SOLID))
dc=wx.ScreenDC()
dc.SetBrush(wx.TRANSPARENT_BRUSH)
dc.SetPen(wx.Pen((255, 0, 0), width=3, style=wx.PENSTYLE_SOLID))
dc.DrawLine(x1,y1,x2,y2)